The idea of the series is based on the conflict between good and evil, evil represents the great Vega, an evil space commander who lives in his spaceship in outer space whose goal is to control all the planets of the universe, Vega uses in his attack on other planets robots and huge robots, and one day Vega the Great invades the peaceful planet Fled, but the Duke of Fled, the son of the king of the planet Fled, manages to escape by stealing Grendizer, who was developing on the scientifically advanced planet Fleed and leads Grendizer To outer space until he falls days later tired on planet Earth and is found by Dr. Amon, head of the Space Research Center in Japan, and adopts the Duke of Fled without revealing the truth of his personality and calls him Daisuke, the events of the series begin when Vega the Great prepares his plan to invade Earth and Vega is surprised by the presence of Grendizer on Earth.
Episodes Season Season 1 · 0/74 0/74 watched · 1979 S01E01 Kouji Kabuto and Duke Fleed 1979-02-27
Koji Kaboto tries his OVT that he made with pieces of mecano. When flying, he is attacked by the UFOs of Vega. Fortunately Duke Fleed arrives on time to save the day (but not too quickly nonetheless). Koji does not actually know that Duke Fleed is the prince of Fleed. more S01E02 Oh Our Green Land 1979-03-06
Koji discovers the identity of the Duke Fleed, but has no time to ask questions because Vega attacks. Duke Fleed and Koji unite their power and push back the enemy more S01E03 The White Birch Plantation Is In Danger 1979-03-13
Dampee Makeeba organizes a party at the ranch and invites Koji and Duke Fleed. The latter has no time to eat anything because Vega attacks. more S01E04 Let It Fall Gol Gol 1979-03-20
Gandal wants to discover the hiding place of Grendizer. So he launches a massive attack. Koji tries to confront the enemies alone, but he only succeeds to crush himself on a deserted island. Finally Duke Fleed makes it there and saves the day. more S01E05 Love In The Evening Of Glory 1979-03-27
Koji, Hikaro, Goro and Bunta are taken in hostage. Actarus interrupts his siesta to free them. more S01E06 The Warrior Spirit Heads Into Space 1979-04-03
While on a trip to downtown, Hikaro and the others are taken hostages by the Vgean monster. more S01E07 Even If I Lose My Life 1979-04-10
King Vega sends one of his commanders to join in earth's invasion more S01E08 What A World Of Peace This Is 1979-04-17
Blaki sets a trap to Grendizer by hiding mines in a cloud of spatial dust. Koji falls in the trap. Fortunately Duke Fleed helps him and destroys the Golgoth 8. more S01E09 Overcome Uncontrolled Anger 1979-04-24
King Vega again sends one of his commanders, this time a female, to join in Earth's invasion. more S01E10 Longing For My Parents 1979-05-01
A young boy makes contact with the Vegans and agrees to run errands in exchange for a trip to outer space. more S01E11 The Villains Intercept The Blazing Sun 1979-05-08
The Vegans plan is to bring Grendizer to the shadow of the moon during the eclipse because Grendizer's systems will shut down temporarily under it and then destroy it. more S01E12 A Girl Crossing The Rainbow Bridge 1979-05-15
Daisuke and Kogi are sent to investigate an avalanche and to find survivors. They find a girl named Mirana who lost her memory. Back at Space Science Centre she begins to remember how a saucer destroyed her home. more S01E13 Grendizer Is In Danger 1979-05-22
A new Vegan mecha comes to destroy Earth. It sucks power from the sun and burns everything in its path. Grendizer is damaged by it and has to withdraw. As the mecha attacks again Grendizer has to go to battle weaponless. more S01E14 New Year's At Boss Bart's 1979-05-29
Boss, Nuké, and Mocha are in this episode. They are visiting their old friend Koji Kabuto. The Vegans keep their eye on a mysterious orange robot that is found skiing near-by. Commander Blacki orders the Minifo to follow it and investigate. more S01E15 To My Dear Mother 1979-06-05
Commander Yara is forced to create a machine that creates earthquakes and use it on the city Kanto. more S01E16 Triumph Of Love 1979-06-12
A Vegan pilot lands near the Space Science Centre and makes Mr. Hayashi's fiancé, Kaori, a spy for him. She takes Dr. Umon as a hostage. more S01E17 Saving A Small Life 1979-06-19
The Vegans begin building a base for their operations on Earth. The saucer "Giba Giba" begins to attack but Grendizer comes to save the day by saving a town and a mountain. more S01E18 The Secret Path Number Seven 1979-06-26
Dr. Umon made a project so that Grendizer is able to launch without revealing his whereabouts to the enemy. Kabuto is control by the Vegans and fights Duke. more S01E19 Scary Atmospheric Minerals 1979-07-03
A huge meteor is headed straight gives order to fire on the meteor and change its course to head for the planet Earth. The meteors are detected and Grendizer launches to intercept them before they hit land. more S01E20 Surviving The Snow-Capped Mountain 1979-07-10
Daisuke gets the suspicion that the Vegans may be planning to pull the moon down to Earth. Duke Freed launches Grendizer and follows Koji who already went to explore the area of Mount Kirofoki. more S01E21 Dawn Rise Day 1979-07-17
Daisuke has to save one of the horses in the ranch from sickness while finding time to fight evil Vegan army. more S01E22 Flower Courage 1979-07-24
The Vegans get wind of a device and plan to steal it more S01E23 Hikaru Cries Across The Waterfall 1979-07-31
The most prized horse in the ranch escapes and the search ensues. Meanwhile the Vegans are again searching for Grendizer's hideout. more S01E24 Duke Fleed Is In Danger 1979-08-07
Another Vegan commander is sent on an earthbound mission. more S01E25 Flower Of Love Bloomed In The Sky 1979-08-14
A vehicle crash-lands in a forest near the ranch, piloted by a beautiful lady. more S01E26 The Successive Attacks 1979-08-21
The space science center undertakes a rocket ship and satellite station project orbiting earth. more S01E27 Grendizer Counterattack 1979-08-28
Grendizer is in a bind but Daisuke extricates successfully! more S01E28 Devil'S Bell In The Dark 1979-09-04
King Vega sends an ally to assist Gandal in invading Earth. more S01E29 Farewell To A Friend Coming From The Space 1979-09-11
Vegans shrink the cells of the living body to make Harook become a young boy for a time so he can spy Space Science Centre. Harrok and Goro become friends but later the effects of the shrinking begin to wear off so Harook captures Goro. more S01E30 The Story Of The Red Spot 1979-09-18
A strange rock full of radiation energy lands on Earth and Dr. Umon can't make much of this new phenomenon. At the same time, the Vegans discover this strong source of energy and put it to use in their next saucer beast. more S01E31 A New Friendship 1979-09-25
The Boss, Koji, and Bunta go to the Boss Borot to begin their counterattack of the Vegan attack on them but will face some technical difficulties. Grendizer gets into some trouble while trying to help them but the Boss Borot will help Grendizer in the funniest way but will lose his Boss Spazer. more S01E32 A Rebellion Against The Mother 1979-10-02
The Vegans send a woman by the name of Marian who looks identical to Duke Freed's mother who passed away on planet Freed. more S01E33 Death Of A New Weapon 1979-10-09
The Vegans send a bird named "Zari Zari" to distroy Grendizer, but Duke remember a similar bird from his home planet Fleed and will use this knowledge to go and finish it off. more S01E34 Tear Of The Wolf 1979-10-16
Vega promised Commander Gos that if he kills Duke Freed then Vega would spare the Wolf Planet from Vegan brutality. more S01E35 Flying In The Space 1979-10-23
General Gandal assigns Commander Beetle with his saucer beast to attack the Space Science Centre from underground. Meanwhile, Koji Kabuto's new Double Spazer ship has just been completed and Koji is ready to be air-born again. more S01E36 A Covenant In The Space 1979-10-30
Dr. Umon calls Daisuke and Koji to show them the way that Grendizer and Double Spazer can unite together and fly. The objective of this is to minimize the need for Grendizer to have to lock in and out of Spazer as these are Grendizer's weakest moments and he is helpless in them. more S01E37 Connect Your Life With Wings 1979-11-06
The Vegan plan is to steal a huge capsule full of Super Uranium from Earth. Vegan forces are dispatched immediately to do just that. more S01E38 Tearful Adhesion 1979-11-13
Hikaru becomes a pilot. Duke Freed faces another Vegan saucer beast loaded with Vegatron rays, and Koji nearly gets captured by the Minifo after gathering the energy but manages to escape very injured. more S01E39 Surprise Attack By Vega'S Forces 1979-11-20
Danbi tells Daisuke that his daughter is outstanding and capable of helping him and Koji. Daisuke disagrees insisting that war and sport are two different things. Finally Daisuke will allow Hikaru to be part of the team after her vital help. more S01E40 A Heavy Impact, The Sea Is On Fire 1979-11-27
A series of explosions start to occur under the sea and General Zuril wastes no time in discovering that this is raw Uranium. Saucer beast "Boi Boi" is launched to go and get this energy as this saucer beast naturally collects Uranium. At the same time Dr. Umon is alerted by these explosions which are close to an island with a Uranium capsule. more S01E41 Launching The Marine Spazer 1979-12-04
Hikaru loses her consciousness during training and Duke Freed gets injured and his old wound gets worse. The Vegans begin their attack and Daisuke goes to the battle even though he is injured. more S01E42 Emergency Situation At The Space Research Center 1979-12-11
Dr. Umon's Space Science Centre is undergoing some major changes to keep up with Vega's attacks. A super computer is installed in the base, and turning it on will be the final step. The Vegans plan to get rid of the base and leave Grendizer without a place to hide. more S01E43 Meteor Deserted Island 1979-12-18
A strange meteor heads slowly towards Earth and Koji will go unilaterally and see what it's all about. After nearly getting blinded by a ray that came out of the meteor, Koji's Double Spazer begins to exit the Earth's atmosphere. more S01E44 Celebration Night 1979-12-25
A young man by the name of Hiyoshi is very interested in searching for ancient evidence to prove that spacemen came to Earth in the past. He goes to look at walls in a near-by cave for ancient scripts to prove his theory, but the villagers think he is crazy. Hundreds of years ago, the Vegans had sent some of their people to Earth. There still is a metal on the wall that they used for landing, and this metal cannot be detected by the radar. more S01E45 Burn, You Drill Spazer 1980-01-01
With his telescope, Goro spots a meteor that splits in two with each piece landing in a different mountain. These actually contain eggs of the Vegan ants. When Goro tells everyone about it he is not taken seriously. Soon Grendizer and Drill Spazer will unite to face the new danger. more S01E46 Sharks Falling From The Sky 1980-01-08
Vegan robot sharks land one night and are hidden in a public pool for their next plan. Koji finds himself a hostage of the Vegans who tell him about their plans to take all of the people as hostages. more S01E47 The Lake Brings Out The Fire Of Hell 1980-01-15
Danbi induces a race between Daisuke and Koji. Koji takes it to seriously. The group goes camping near a lake. Vegans begin to descent in the lake and then the Space Science Centre suddenly gets attacked by missiles from the near-by lake where the Vegans stay hidden. more S01E48 Demons From The Depths Of The Earth 1980-01-22
Duke Freed unites with Koji and the Drill Spazer to chase a Vegan saucer beast. The Vegans make an acid swamp to sink the Space Science Centre. more S01E49 I Saw My Brother In The Red Sunset 1980-01-29
Maria tries to kill Duke, thinking the person who pilots Grendizer is evil but during the fight Duke necklace falls and the siblings discover who each other is. more S01E50 Get Rid Of Kouji Kabuto 1980-02-05
Maria the new member on the team, is able to control Grendizer and Marine Spazer. She also has the ability to foresee events so she is able to save Koji from Vegans. more S01E51 The Massive Approach 1980-02-12
The Vegan plan is to make this moon enter the Earth's atmosphere and cause a catastrophe. The battle between Vegans and Grendizer takes longer than anticipated and it is too late for Grendizer to fire the missile. more S01E52 The Big Move Of Vega'S Army 1980-02-19
General Zuril orders a powerful attack with his latest saucer beast "Domo Domo" to defeat Grendizer before General Dantos gets the chance. more S01E53 Fight To The Death With The Vega Monster 1980-02-26
Duke Freed will go after Hikaru who is hostige on foot not using Grendizer and help her escape from the giant beast while Koji takes Grendizer back for repairs. more S01E54 Terror In The Depths Of The Sea 1980-03-04
The Vegan built a base underwater knowing that Grendizer cannot withstand depths great than 400 meters. more S01E55 The Terrifying Balloon 1980-03-11
Vegans gather some fuel from an industrial island. General Zuril instructs General Gandal on what to do but he doesn't listen and he gets into trouble because his unilateral action revealed that the Vegans have a base on Earth. more S01E56 A Fake Doctor Causes A Crisis 1980-03-18
Dr. Umon launches a satellite into space to track Vegan movements on Earth. more S01E57 The Savage Beetle 1980-03-25
Koji and Maria are on their vacation in Tokyo, they get into a fight as usual and split up. more S01E58 Fake Grendizer Appearance 1980-04-01
The Vegans make a false Grendizer that attacked Earth people so the real Grendizer will be hated. more S01E59 Deceived Little Fighters 1980-04-08
A group of Vegan kids come to Earth and hold hostages the people inside the observatory. more S01E60 Tokyo Castle Will Be Destroyed At 7 P.M 1980-04-15
The Vegans attract a huge number of rats to use for their next mission. These rats are implanted with Vegatron bombs for the purpose of blowing up different targets in Tokyo. more S01E61 Pegastros's Plan 1980-04-22
Toko 1, Toko 2, Toko 3, and Toko 4 are Vegan agents taking appearances of other people trying to distroy Space Science Centre more S01E62 Day Of The Swans Came 1980-04-29
Swans are implanted with Vegatron missiles for the next Vegan plan. Duke Freed is forced to kill the swans and must head to the city and face saucer beast "Go Go". more S01E63 Kirika Disappears Into The Snow 1980-05-06
Kirika, a Vegan scientist, is sent to freeze with her new weapon Duke Fleed. more S01E64 Five Minutes Before Tokyo Is Destroyed 1980-05-13
The Vegans invent a bomb and General Gandal threatens to blow up Tokyo is Grendizer does not surrender. more S01E65 Koji Kabuto In A Heroic Stance 1980-05-20
The Vegans fire a big group of missiles towards Tokyo. The Grendizer Team launches to destroy the missiles before they hit the city. more S01E66 The Death 400 Meters Below Sea Level 1980-05-27
Maria in the Marine Spazer gets stuck in a giant seaweed trap and Koji swims to the bottom of the sea to help her. more S01E67 Blow Up The Submarine Base 1980-06-03
General Zuril launches an attack on the Space Science Centre with air balloon bombs. Koji gets caught by the Vegans and held as hostage. more S01E68 Maria In The Blizzard 1980-06-10
A young man from Fleed named Kane is a loyal soldier of the Vegans. He comes to Earth to fight. Maria tries to face him and they both crash. Soon she will realize that Kane was her childhood friend from more S01E69 Zourel Is In Distress 1980-06-17
The son of Zouril,Zuril Jr. wants to fight Grendizer but Zouril doesn't want him to. Zuril Jr. sacrifice himself for his father in the end more S01E70 Goodbye, King Fleed 1980-06-24
Maria has a nightmare about her father being hostage. She goes to the cave where she saw her father in her dream along with Koji where she learns the truth. more S01E71 Fairwell, Best Friend 1980-07-01
Moros, Duke's best friend from Freed was made to believe that Duke Freed destroyed Freed by Vega and now comes to Earth to kill Duke. more S01E72 A Citizen From A Distant Planet 1980-07-08
Princess Rubina, Duke Fleed's fiancé comes to Earth to tell Duke that his planet is no longer polluted but dies after being shoot by one of Vega's generals. more S01E73 In Honor Of This Wonderful Land 1980-07-15
King Vega prepares to attack Earth but Duke and company are ready to stop him with the help of Grendizer and Spazers. more S01E74 Shine Forever, Two Stars 1980-07-22
Duke finally destroys King Vega but he and Maria must return to planet Fleed. more 
